WiX: correct component references

There were references to components which have been converted to
`ComponentGroup`s to enable repairs to reinstall files when necessary.
This requires that the references be updated as well.  Due to the
inability to include debug info, we did not catch the issues in the
ARM64 and AMD64 cases, and the X86 builds are not enabled on swift.org
yet.

Author: compnerd

platforms/Windows/runtime-amd64.wxs

@@ -177,7 +177,7 @@
       <?ifdef INCLUDE_DEBUG_INFO ?>
       <Feature Id="DebugInfo" Absent="allow" AllowAdvertise="yes" Description="Debug Information for Swift Utilties for Windows x86_64" Level="0" Title="Debug Information">
         <Condition Level="1">INSTALL_DEBUGINFO</Condition>
-        <ComponentRef Id="SwiftUtilitiesDebugInfo" />
+        <ComponentGroupRef Id="SwiftUtilitiesDebugInfo" />
       </Feature>
       <?endif?>
     </Feature>

platforms/Windows/runtime-x86.wxs

@@ -159,24 +159,24 @@
 
     <!-- Feature -->
     <Feature Id="Win32SwiftRuntime" Absent="disallow" AllowAdvertise="yes" ConfigurableDirectory="INSTALLDIR" Description="Swift Runtime for Windows i686" Level="1" Title="Swift Runtime for Windows i686">
-      <ComponentRef Id="SwiftRuntime" />
+      <ComponentGroupRef Id="SwiftRuntime" />
       <ComponentRef Id="EnvironmentVariables" />
 
       <?ifdef INCLUDE_DEBUG_INFO ?>
       <Feature Id="DebugInfo" Absent="allow" AllowAdvertise="yes" Description="Debug Information for Swift Runtime for Windows i686" Level="0" Title="Debug Information">
         <Condition Level="1">INSTALL_DEBUGINFO</Condition>
-        <ComponentRef Id="SwiftRuntimeDebugInfo" />
+        <ComponentGroupRef Id="SwiftRuntimeDebugInfo" />
       </Feature>
       <?endif?>
     </Feature>
 
     <Feature Id="Win32SwiftUtilities" Absent="allow" AllowAdvertise="yes" Description="Extra Swift Utilities for Windows i686" Level="1" Title="Swift Utilities for Windows i686">
-      <ComponentRef Id="SwiftUtilities" />
+      <ComponentGroupRef Id="SwiftUtilities" />
 
       <?ifdef INCLUDE_DEBUG_INFO ?>
       <Feature Id="DebugInfo" Absent="allow" AllowAdvertise="yes" Description="Debug Information for Swift Utilties for Windows x86_64" Level="0" Title="Debug Information">
         <Condition Level="1">INSTALL_DEBUGINFO</Condition>
-        <ComponentRef Id="SwiftUtilitiesDebugInfo" />
+        <ComponentGroupRef Id="SwiftUtilitiesDebugInfo" />
       </Feature>
       <?endif?>
     </Feature>